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Reallocated sector count

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#1 frank11111


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Posted 28 June 2011 - 05:31 PM

I'm using XP home SP3 on a Western Digital Caviar Black 640GB, WDC WD6401AALS-00J7B0

So I just bought this new HD because my last one had reallocated sectors and I was advised to replace it ASAP. I've had this one less than a month and I'm having the same problem. I was un-packing an ISO file with Winrar, my computer got really slow, froze up and then crashed with a blue screen. When it restated, the initial screen with options to look at boot order or setup started. Normally it goes away after a few seconds and Windows starts but it just stayed there. When I tried to look at boot order or setup it would say Loading at the bottom but never do anything. Finally i tried a hard shut down instead of hard restart. When I turned it back on it loaded normally but the BIOS message said the HD was failing. XP loaded, I checked SMART with Western Digitals tool, and now here I am.

The Raw value is 41 and the threshold is 140. Does the drive fail completely once it reaches 140? What can cause this to happen? It seems like it must be something I'm doing for it to happen so soon after buying it.

If the Raw value doesn't get worse over time is it safe to assume this was caused by a one time event?

last question, I read somewhere that you can cordon of bad sectors so that it won't slow down your computer. How would I go about doing that?


EDIT: Just thought I should mention it's completely possible that there were bad sectors before today and I just didn't know. I hadn't turned off my computer in a while so I wouldn't have seen the BIOS message until today (day of posting)

EDIT 2: I used Western Digitals tool to check the SMART status of the drive but it also lets you run a quick scan and an extended scan. I just finished the extended scan of all sectors and it reported no problems which was confusing.

Edited by frank11111, 28 June 2011 - 10:42 PM.

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#2 hamluis



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Posted 28 June 2011 - 08:35 PM

I don't know the source of these numbers that you throwing around...did you run the appropriate hard drive manufacturer's diagnostic on the drive?

Bad sectors can be an indicator of drive problems...but further analysis is needed.


#3 frank11111

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Posted 28 June 2011 - 10:38 PM

Every SMART scan I've ever seen shows a list of areas it tests such as the reallocated sector count. Then there are columns titled Raw, Threshold, etc (like i said in the post). In this case at least, raw indicates the amount of bad sectors (41). I don't understand what threshold means though. I figured it means if i have more bad sectors than 140 I'm screwed.

like I said in the post I used Western Digitals scanner (WinDlg).

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